I have atrial fib pop up at the weirdest times. Wearing a HRM alerts me so I can take precaution. I wouldn't ride without one. I am 58 and in pretty decent shape. I just like knowing what is happening. I have an alarm for when my HR exceeds 170. I also have a printout that I can take to my cardiologist if something looks wacky.
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I think its disgusting and terrible how people treat Lance Armstrong, especially after winning 7 Tour de France Titles while on drugs!
I can't even find my bike when I'm on drugs. -Willie N.